N.J. Stat. § 2A:44-170
In every case where a processor shall make, do or furnish any film laboratory work, labor, services or materials in connection with any motion picture film or advance or loan money in connection therewith, or in connection with the production or distribution thereof, to or for the account of, or at the request of, or with the consent or knowledge of, the owner thereof, or of any party authorized with respect to such motion picture film, such processor shall have a lien upon such motion picture film, and upon all other motion picture films of such owner and of all parties authorized with respect to such motion picture film, negative or negatives or positive print or prints which are in the possession of the processor. Such processor may, without process of law, detain the negatives and positives of all such motion picture films at any time in its possession until the payment to such processor of all indebtedness due or to grow due to such processor on account of such film laboratory work, labor, services or materials, so made, done or furnished by it and on account of all moneys paid out, loaned or advanced by such processor in connection therewith or in connection with the production or distribution of such motion picture film.
N.J.S. § 2A:44-170